Are Jehovah's Witnesses "Christian"?
Are Unitarian Universalists Christian?
How about Roy Masters? Christian Identity? Theosophy?
What is your standard for calling yourself or anyone else "Christian"?
I have not heard from you in a long time, P-Marlowe. Welcome back.
In everyday conversation, I use Christian much the same way most English speakers use the word:
Christian 1 a : one who professes belief in the teachings of Jesus Christ b : DISCIPLE (Merriam-Webster Dictionary)
For those who insist on a Biblical definition of the word (which appears just three places in the KJV), I cite Acts 11:26:
. . . So for a whole year Barnabas and Saul met with the church and taught great numbers of people. The disciples were called Christians first at Antioch.
In short, a Christian is a disciple of Jesus Christ.